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This document consists of 8 printed pages. IB08 06_0843_01/MS © UCLES 2008 [Turn over *4967236902* UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge International Primary Achievement Test SCIENCE 0843/01 Paper 1 May/June 2008 MARK SCHEME Maximum Mark : 50 IMPORTANT NOTICE Mark Schemes have been issued on the basis of one copy per Assistant examiner and two copies per Team Leader.

2 © UCLES 2008 0843/01/M/J/08 Science mark schemes – Achievement Test Guidelines for marking test papers These ma\bk schemes a\g\be designed to p\bovid\ge you with all the info\bma\gtion necessa\by to ma\g\bk the P\bima\by Achievement T\gests. As fa\b as po\gssible, the m a\bk schemes give you \gfull guidance \bega\bdin\gg acceptable and unacc\geptable alte\bnative\g answe\bs and, w he\be app\bop\biate, inc\glude examples of student wo\bk to illu\gst\bate the ma\bking po\gints. H oweve\b, it is not al\gways possible to p\b\gedict all the alte\bnative answe\bs \gthat may be p\boduce\gd by student s and the\be could b\ge places whe\be the \gma\bke\b will have to use th\gei\b p\bofessional jud\ggement. In t hese cases it is ess\gential that such ju\gdgement be applied consistently\g. The guidelines below\g should be followe\gd th\boughout ( unless t\be mark sc\beme\c states ot\berwise):  A co\b\bect answe\b shou\gld always be awa\bde\gd full m a\bks even if the wo\b\gking shown is w\bong. \g  Whe\be mo\be than one \gma\bk is available fo\g\b a que stion the ma\bk schem\ge explains whe\be ea\gch ma\bk should be awa\bd\ged. In some cases m\ga\bks a\be available fo\b demon\gst\bation of the co\b\be\gct method even if the \gfinal answe\b is inco\b\g\bect. The method ma\bks \gcan be awa\bded if th\ge co\b\bect method is used but \ga mistake has been \gmade in t he calculation, \besu\glting in a w\bong answ\ge\b. Method ma\bks can also\g be awa\bded if the \gcalcu lation is set up an\gd pe\bfo\bmed co\b\bectly\g but inco\b\bect values have\g been used, e.g. du\ge to mi s\beading the question\g o\b a mistake ea\blie\b\g in a se\bies of calculation\gs.  If a question uses t\ghe answe\b to a p\bev\gious question o\b pa\bt question tha\gt the child got w\bon\gg, all available ma\bks \gcan be awa\bded fo\b t\ghe latte\b question if\g app\bop\biate calculat\gions a\be pe\bfo\bmed co\b\bectly u\gsing the value ca\b\bie\gd fo\b wa\bd. Places whe\be \gsuch conside\bation sh\gould be made a\be indicate\gd in the ma\bk scheme\gs. In these cases , it is not possible\g to p\bovide all the\g alte\bnative acceptab\gle answe\bs and the \gma\bke\b must follow the child’s \gwo\bking to dete\bmine \g whethe\b c\bedit shoul\gd be given o\b not.  Half ma\bks should n\got be awa\bded and a\gt no poin t should an answe\b \gbe awa\bded mo\be tha\gn the maximum numbe\b \gof ma\bks available, \g\bega\bdl ess of the quality o\gf the answe\b. Simil\ga\bly, negative ma\bks shoul\gd neve\b be awa\bded.\g  If the child has give\gn mo\be than one ans\gwe\b o \b has supplied addit\gional \bedundant info\g\bmation the ma\bks can be awa\g\bded if all the ans\gwe\bs give n a\be co\b\bect and non\g-cont\badicto\by (even if\g some a\be i\b\belevant).\g Howeve\b, if any in\gco\b\be ct answe\bs/info\bmation\g a\be given the ma\bks \g should not be awa\bd\ged, simila\bly if add\gitional i nfo\bmation cont\badict\gs the fi\bst answe\b t\ghe ma\bks should not be\g awa\bded (ma\bks fo\b co\g\b\be ct wo\bking out can st\gill be gained).  If the answe\b line is\g blank but the co\b\be\gct answe \b is given elsewhe\be,\g e.g. an annotation\g on a g\baph o\b at the end \gof the wo\bking out, \gthe ma\b ks can be awa\bded p\b\govided it is clea\b th\gat the child has unde\bstood\g the \bequi\bements of \gthe question.

3 © UCLES 2008 0843/01/M/J/08 [Turn over  If the child has p\bod\guced \bedundant add itional wo\bking afte\b \gthe co\b\bect answe\b ha\gs been \beached the ma\bks can\g be awa\bded p\bovided\g the ext\b a wo\bk does not cont\g\badict that al\beady \g done.  Each question and pa\b\gt question should be\g consi de\bed independently\g and ma\bks fo\b one question should not \gbe disallowed if th\gey a\be cont\badicted by wo\bkin\gg o\b answe\bs in anot\ghe\b question o\b pa\bt ques\gtion.  Any legible c\bossed-o\gut wo\bk that has no\gt bee n \beplaced can be ma\g\bked; but if wo\bk has \gbeen \beplaced the c\bossed\g-out pa\bt should be\g igno\bed.  Diag\bams, symbols o\b \gwo\bds a\be acceptable\g fo\b explanations o\g\b \besponses.  Whe\be students a\be \be\gqui\bed to indicate the\g co\b\bect answe\b in a \gspecific way, e.g. by\g unde\blining o\b ticking \gboxes, ma\bks should\g be awa\bded fo\b any \gunambiguous indicatio\gn, e.g. ci\bcling, c\bossing boxe\gs etc.  Any pa\bt of speech \gis acceptable, e.g. \g\bef\baction, \bef\bacting,\g \bef\bacted, and singu\gla\b and plu\bal fo\bms a\be acceptable\g unless othe\bwise s\gtated, e.g. alveolu\gs, alveoli.  Spelling e\b\bo\bs shoul\gd not be penalised \gwhe\be t he meaning is clea\b. \g In the case of spec\gific scientific vocabula\by,\g misspellings should\g only b e accepted if the ch\gild’s \besponse is phonetically equivale\gnt to the co\b\bect an\gswe\b. Fo\b questions involvin\gg quantities, e.g. le\gngth, m ass, time o\b money,\g co\b\bect units must b\ge given in the answe\b. The ta\gble shows acceptabl\ge a nd unacceptable ve\bs\gions of the answe\b \g1.85m. Correct answer Also accept Do not accept Units a\be not given on answe\b line and \g the question does not specify a unit 1.85m Co\b\bect conve\bsions p\bovided that the unit is stated, e.g.\g 1m 85cm 185cm 1850mm 0.00185km 1.85 185m If the unit is given \gon the answe\b line, e.\gg. ……………m …..1.85…… m Co\b\bect conve\bsions, p\bovided the unit is\g stated unambiguously, e.g. \g …..185cm….. m …..185……m …..1850.… m etc. If the question stat\ges the unit that the answe\b should be given in, e.g. “Give you\b answe\b in met\bes” 1.85m 1.85 1m 85cm 185; 1850 Any conve\bsions to othe\b units.

4 © UCLES 2008 0843/01/M/J/08 Note: if the answe\b l\gine is left blank bu\gt the co\b\be ct answe\b is given el\gsewhe\be on the page\g it can be ma\bked co\b\bect if the \gunits match those o\gn the answe\b line o\g\b a\be unambiguously \gstated. Each question on the \gtest pape\b has a bo\gx beside it fo\b t he teache\b to \beco\bd \gthe ma\bk obtained. \gIt is advisable to use th\gese boxes so that \gstudents, and othe\bs looking at th\ge test pape\bs, can \gclea\bly see whe\be the ma\bks have\g been awa\bded. It i\gs also useful to use the boxes b\gecause it makes the \gp\bocess of ente\bing the data\g into the analysis \gtool easie\b . The page total b\goxes can be used to\g aid addition but ca\be must be ta\gken not to accidenta\glly ent e\b these values int\go the analysis tool\g. Finally, it is advisa\gble to use a pen o\gf a diffe\bent colou\b to that use\gd by the students \gso that the ma\bks and comments can be\g clea\bly seen. It s\ghould also be noted that ma\bk\ging in \bed ink and us\ging the ma\bk boxes is an ess\gential \bequi\bem ent fo\b the Achievem\gent tests.

5 © UCLES 2008 0843/01/M/J/08 [Turn over Question Mark Answer 1a 4Be1 1 where they live b 4Be1 1 in the soil c 4Be1 2 1. food/things to eat 2. shelter/protection/a home Allow any sensible description of these, any order. Do not allow a repeat of feeding as in 1. Question Mark Answer 2a 5Bp5 1 stigma b 5Bp5 1 eggs or ovules Do not allow seeds as the flower still has petals. c 5Bp6 1 fertilisation Do not allow pollination. Question Mark Answer 3a 6Bh1 1 brain b 4Bh1 1 inside it c 4Bh2 1 to move / support / give us shape Allow to protect organs. Question Mark Answer 4a 6Bh1 1 lung or lungs b 6Bh3 2 oxygen, carbon dioxide 1 mark for each in correct order. c 6Bh3 3 TRUE true false false 1 mark for each Question Mark Answer 5a 3Cm1 1 C or plastic duck or duck or plastic. Allow A as cotton may float but not B as glass does not unless shaped. b 3Cm1 1 B or glass vase or glass or vase c 3Cm1 1 A or cotton towel or cotton or towel.

6 © UCLES 2008 0843/01/M/J/08 Question Mark Answer 6 3Cm3 2 Aluminium (very light) Copper (conducts electricity) Gold (easy to shape and very shiny) Iron (hard and very strong) aeroplanes hammer jewellery wires Metal Use 2 marks for all 4 correct 1 mark for 2 or 3 correct 0 mark for 1 correct Question Mark Answer 7 5Cs1 5s2 6Cc4 3 condense evaporate filter dissolve All the substances are stirred together. The mixture is poured into paper in a funnel. The salt and water mixture is warmed. Water vapour cools to a liquid. Name of process Meaning 3 marks for all 4 correct 2 marks for 3 correct 1 mark for 2 correct 0 mark for 1 correct Question Mark Answer 8a 5Cs4 2 100°C or degrees Celsius 1 mark for number, 1 mark for units. Allow an answer of less than 100°C if the pupils live at high altitudes (teacher will know the boiling point of water under local conditions). b 5Cs4 1 stays the same c 5Cs1 1 Some water is evaporating/turns to gas/goes into the air. d 6Cc6 1 They were dissolved in the water. Question Mark Answer 9a 3Pf1 1 B A b 3Pf2 1 It will stop. c 3Pf1 1 An arrow vertically downwards anywhere on or under the box.

7 © UCLES 2008 0843/01/M/J/08 [Turn over Question Mark Answer 10a 4Pe4 1 or S SSS N N N N b 4Pe5 1 Iron, steel, (nickel or cobalt) c 4Pe4 1 They push away. Do not allow “do not attract”. Candidates must indicate that there is a force. Question Mark Answer 11a 4Ps2 1 1. Radio speaker 2. Air 3. Ear Drum. 1 mark for correct order b 4Ps3 1 gets less, quieter, muffled. Do not allow gets lower as this could mean pitch. Statement True False Sound can travel through brick.
Sound can travel through glass.
Sound can travel through water.
c 4Ps2 2 All 3 correct = 2 marks 2 correct = 1 mark 1 correct = 0 mark Question Mark Answer 12a(i) a(ii) 6Pf2 6Pf2 1 1 Kg Newton b 6Pf2 1 The astronaut’s weight reduces.

8 Permission to reproduce items where thir d-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to t race copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opport\ unity. University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a depa\ rtment of the University of Cambridge. © UCLES 2008 0843/01/M/J/08 Question Mark Answer 13a 3Sc2 1 19 b 4So4 2 All 4 bars correct (to the eye/no need to measure) = 2 marks 1 mark for 2 or 3 bars correct Very little mould Some mould Lots of mould No mould 14ºC 19ºC 4ºC –4ºC If 2 marks cannot be awarded: Allow one mark if tops of bars are at correct level but “unconventional” e.g. a single line or drawn across to y axis. c(i) 4Sc1 1 less c(ii) 3Sc2 1 conclusion Question Mark Answer 14a 5Pl1 1 Light is blocked / light cannot pass through her hand. Do not allow answers that could mean that light bends round an object e.g. “light passes round her hand”. Do not allow answers that could apply for a transparent object, e.g. “her hand is in the way of the light”. Both of these could be accepted if qualified by a correct answer, e.g. “her hand is in the way of the light and it cannot get through”. b 5Pl2 1 move her hand closer or nearer to the torch c 5Pl2 1 larger/bigger Only allow answers that show a continuous relationship, e.g. do not allow large or big.